119 lines
4.7 KiB
C
119 lines
4.7 KiB
C
/*
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* Copyright (c) 2009-2010, Salvatore Sanfilippo <antirez at gmail dot com>
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* Copyright (c) 2010, Pieter Noordhuis <pcnoordhuis at gmail dot com>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Redis nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __HIREDIS_ASYNC_H
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#define __HIREDIS_ASYNC_H
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#include "hiredis.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct redisAsyncContext; /* need forward declaration of redisAsyncContext */
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/* Reply callback prototype and container */
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typedef void (redisCallbackFn)(struct redisAsyncContext*, void*, void*);
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typedef struct redisCallback {
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struct redisCallback *next; /* simple singly linked list */
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redisCallbackFn *fn;
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void *privdata;
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} redisCallback;
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/* List of callbacks for either regular replies or pub/sub */
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typedef struct redisCallbackList {
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redisCallback *head, *tail;
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} redisCallbackList;
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/* Connection callback prototypes */
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typedef void (redisDisconnectCallback)(const struct redisAsyncContext*, int status);
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typedef void (redisConnectCallback)(const struct redisAsyncContext*);
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/* Context for an async connection to Redis */
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typedef struct redisAsyncContext {
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/* Hold the regular context, so it can be realloc'ed. */
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redisContext c;
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/* Setup error flags so they can be used directly. */
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int err;
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char *errstr;
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/* Not used by hiredis */
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void *data;
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/* Event library data and hooks */
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struct {
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void *data;
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/* Hooks that are called when the library expects to start
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* reading/writing. These functions should be idempotent. */
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void (*addRead)(void *privdata);
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void (*delRead)(void *privdata);
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void (*addWrite)(void *privdata);
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void (*delWrite)(void *privdata);
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void (*cleanup)(void *privdata);
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} ev;
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/* Called when either the connection is terminated due to an error or per
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* user request. The status is set accordingly (REDIS_OK, REDIS_ERR). */
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redisDisconnectCallback *onDisconnect;
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/* Called when the first write event was received. */
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redisConnectCallback *onConnect;
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/* Reply callbacks */
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redisCallbackList replies;
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} redisAsyncContext;
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/* Functions that proxy to hiredis */
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redisAsyncContext *redisAsyncConnect(const char *ip, int port);
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redisAsyncContext *redisAsyncConnectUnix(const char *path);
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int redisAsyncSetReplyObjectFunctions(redisAsyncContext *ac, redisReplyObjectFunctions *fn);
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int redisAsyncSetConnectCallback(redisAsyncContext *ac, redisConnectCallback *fn);
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int redisAsyncSetDisconnectCallback(redisAsyncContext *ac, redisDisconnectCallback *fn);
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void redisAsyncDisconnect(redisAsyncContext *ac);
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void redisAsyncFree(redisAsyncContext *ac);
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/* Handle read/write events */
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void redisAsyncHandleRead(redisAsyncContext *ac);
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void redisAsyncHandleWrite(redisAsyncContext *ac);
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/* Command functions for an async context. Write the command to the
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* output buffer and register the provided callback. */
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int redisvAsyncCommand(redisAsyncContext *ac, redisCallbackFn *fn, void *privdata, const char *format, va_list ap);
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int redisAsyncCommand(redisAsyncContext *ac, redisCallbackFn *fn, void *privdata, const char *format, ...);
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int redisAsyncCommandArgv(redisAsyncContext *ac, redisCallbackFn *fn, void *privdata, int argc, const char **argv, const size_t *argvlen);
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#ifdef __cplusplus
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}
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#endif
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#endif
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